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Overview

Select code directly in Xcode, describe what you want to change, and Parsaa replaces it. Use Cmd+K to activate inline replacement — Parsaa generates a new version of your selected code based on your instructions, and you decide whether to apply it.
Non-destructive by default. Parsaa creates checkpoints before applying changes, so you can always roll back.

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How It Works

1

Select code in Xcode

Highlight the code you want to change — a function, a block, a few lines, or even a single expression.
2

Activate with Cmd+K

Press Cmd+K or describe the change you want in Parsaa’s chat. Tell Parsaa what you need: “convert to async/await”, “add error handling”, “simplify this logic”, etc.
3

Parsaa generates a replacement

Parsaa sends your selected code and your instructions to the AI, which generates a replacement that fits your request.
4

Review the changes

Review the proposed replacement before it touches your code. You see exactly what will change.
5

Apply or discard

Accept the replacement to apply it to your file, or discard it and try a different approach.

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Code Checkpoints

Parsaa automatically creates a checkpoint before applying any inline replacement. If a change doesn’t work out, you can roll back to the previous version.
Checkpoints give you the confidence to experiment freely. Try bold refactors knowing you can always revert.

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When to Use Inline Replacement

Quick Edits

Rename parameters, adjust return types, tweak logic — small, targeted changes without leaving your flow.

Single Function Refactors

Rewrite a function to use a different pattern, like converting completion handlers to async/await.

Pattern Conversion

Convert between coding patterns — delegates to closures, imperative loops to functional chains, etc.

Adding Error Handling

Wrap existing code with proper do/catch blocks, guard statements, or Result types.

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Example

Before — verbose loop: 
var result: String = ""
for i in 0..<items.count {
    if i > 0 {
        result += ", "
    }
    result += items[i].name
}
Instruction: “Simplify this” After — idiomatic Swift: 
let result = items.map(\.name).joined(separator: ", ")
Always review replacements before applying. AI-generated code should be verified for correctness, especially around edge cases and error handling.